The OBDIIC&C is available, but is hand made by me and therefore expensive $350.
Well the HDS is a Honda-specific system that won't work on anything else. The reason you want one over a generic OBDII reader is that the HDS will communicate with all the systems on the car- engine, body, ABS, TPMS, IMA, SRS etc. The generic reader will do engine only. While it's good to have one of those for everyday code reading and quickie engine diagnosis, for more advanced vehicle-specifc stuff you need to be able to see all the manufacturer-specific items. This is especially true on the CRZ
Gotcha.It's worth noting that generic ten a penny OBDII code readers can also only access a small fraction of the ECM (Engine stuff)
You need an HDS or expensive equivalent to see more than the mandated legal OBDII standard minimum.
An HDS is a must for any Honda enthusiast.